Furnace door assembly of double-lock type heat treatment furnace

Abstract

The utility model belongs to the technical field of heat treatment furnace equipment, and particularly relates to a double-lock type heat treatment furnace door assembly which comprises a furnace door panel and a furnace door, a furnace opening is formed in the position of the furnace door panel, and one side of the furnace door is hinged to the edge of the furnace opening. A lock groove is formed in the other side of the furnace door, a main sliding rod is arranged in the lock groove, the two ends of the main sliding rod are fixedly connected to the side walls of the lock groove respectively, the main sliding rod is sleeved with an upper lock handle and a lower lock handle, an upper handle is arranged at the upper lock handle, and a lower handle is arranged at the lower lock handle; the main sliding rod is sleeved with an upper spring and a lower spring, the two ends of the upper spring abut against the side wall of the upper lock handle and the side wall of the lock groove respectively, the two ends of the lower spring abut against the side wall of the lower lock handle and the side wall of the lock groove respectively, and the bottom of the upper lock handle abuts against the top of the lower lock handle; an upper locking block is arranged on the outer side of the upper locking handle, and an upper locking anchor corresponding to the upper locking block is arranged on one side of the furnace mouth; a lower lock block is arranged on the outer side of the lower lock handle, and a lower lock anchor is arranged on one side of the furnace mouth.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of heat treatment furnace equipment, and particularly relates to a double-lock type heat treatment furnace door assembly. BACKGROUND

[0002] The heat treatment furnace is an industrial equipment for heating, holding and cooling treatment of workpieces such as metal materials, ceramics and glass, and is used to change the microstructure of the materials to improve the mechanical properties (such as hardness, toughness and wear resistance) or processing performance.

[0003] The furnace door of the heat treatment furnace is a key component in the furnace structure, and its design, sealing, durability and operating performance directly affect the stability of the heat treatment process, energy efficiency and equipment safety.

[0004] In order to improve the safety of the heat treatment furnace, a furnace door locking mechanism is usually provided at the furnace door to prevent misoperation. Patent CN221172968U discloses an improved high-temperature box-type furnace door structure, and the locking structure can be completed by one hand. In the actual operation specification, when using the heat treatment furnace, one operator needs to open the furnace door, and the other needs to put the workpiece to be heat treated into the furnace. If the operation can be completed by one hand, the operator may open the furnace door with one hand and complete the placement and removal of the workpiece with the other hand, greatly increasing the risk of using the heat treatment furnace. Therefore, the furnace door opened and closed by both hands as a foolproof design can greatly increase the safety of using the heat treatment furnace.

[0005] In order to achieve the above-mentioned purpose, the utility model hopes to provide a double-lock type heat treatment furnace door assembly. UTILITY MODEL CONTENTS

[0006] The utility model aims at providing a double-lock type heat treatment furnace door assembly to solve the problems in the above background technology.

[0007] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0008] A double-lock type heat treatment furnace door assembly, comprising a furnace door panel and a furnace door, the furnace door panel is provided with a furnace opening, one side of the furnace door is hinged to the edge of the furnace opening, the other side of the furnace door is provided with a lock slot, the inside of the lock slot is provided with a main sliding rod, the two ends of the main sliding rod are fixedly connected to the side walls of the lock slot, the main sliding rod is sleeved with an upper lock handle and a lower lock handle, the upper lock handle is provided with an upper handle, and the lower lock handle is provided with a lower handle; the main sliding rod is sleeved with an upper spring and a lower spring, the two ends of the upper spring are respectively abutted with the upper lock handle and the side wall of the lock slot, the two ends of the lower spring are respectively abutted with the lower lock handle and the side wall of the lock slot, and the bottom of the upper lock handle is abutted with the top of the lower lock handle; the outer side of the upper lock handle is provided with an upper lock block, and the side of the furnace opening is provided with an upper lock anchor corresponding to the upper lock block; the outer side of the lower lock handle is provided with a lower lock block, and the side of the furnace opening is provided with a lower lock anchor corresponding to the lower lock block.

[0009] Preferably, the middle position of the main sliding rod is provided with a limiting sliding block, the lower position of the upper lock handle is provided with an upper lock handle reserved position, and the upper position of the lower lock handle is provided with a lower lock handle reserved position.

[0010] Preferably, the lock slot is provided with a directional slot, the upper lock handle is provided with an upper directional block embedded in the directional slot, and the upper lock handle can slide along the directional slot; the lower lock handle is provided with a lower directional block embedded in the directional slot, and the lower lock handle can slide along the directional slot.

[0011] Preferably, the upper lock anchor and the lower lock anchor are both T-shaped anchors, the upper lock anchor faces upward, and the lower lock anchor faces downward.

[0012] Preferably, when the furnace door is closed, the front of the upper lock block is an inclined slope, the front of the lower lock block is an inclined slope, the front of the upper lock anchor is an inclined slope, and the front of the lower lock anchor is an inclined slope.

[0013] Compared with the prior art, the double-lock type heat treatment furnace door assembly has the following beneficial effects:

[0014] (1) The double-lock type heat treatment furnace door assembly adopts the door lock structure of the upper lock handle and the lower lock handle, and the operator needs to simultaneously move the upper lock handle and the lower lock handle to complete the unlocking of the furnace door.

[0015] (2) The double-lock type heat treatment furnace door assembly is characterized in that the upper lock handle and the lower lock handle are simultaneously sleeved on the main sliding rod, the upper lock handle is slid upward to complete the unlocking of the upper lock handle, the lower lock handle is slid downward to complete the unlocking of the lower lock handle, and the upper lock handle and the lower lock handle are simultaneously locked when the force applied to the upper handle and the lower handle is removed. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 Structure diagram of the present application Figure One ;

[0017] Figure 2 Structure diagram of the present application Figure Two ;

[0018] Figure 3 Structure diagram of the present application

[0019] Figure 4 Structure diagram of the present application

[0020] In the figure: furnace door panel 1; furnace door 2; furnace mouth 3; lock slot 4; main slide bar 5; upper lock handle 6; lower lock handle 7; upper spring 8; lower spring 9; limit slide block 10; upper lock handle reserved position 11; lower lock handle reserved position 12; upper handle 13; lower handle 14; upper lock block 15; upper lock anchor 16; lower lock block 17; lower lock anchor 18; directional slot 19; upper directional block 20; lower directional block 21. Specific implementation

[0021] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0022] A self-locking heat treatment furnace door assembly, comprising a furnace door panel 1 and a furnace door 2. The furnace door panel 1 is provided with a furnace mouth 3, and one side of the furnace door 2 is hinged to the edge of the furnace mouth 3. The other side of the furnace door 2 is provided with a lock slot 4, and the inside of the lock slot 4 is provided with a main slide bar 5, and the two ends of the main slide bar 5 are fixedly connected to the side walls of the lock slot 4. An upper lock handle 6 and a lower lock handle 7 are sleeved on the main slide bar 5, and the furnace door 2 is locked by the upper lock handle 6 and the lower lock handle 7.

[0023] The upper lock handle 6 and the lower lock handle 7 are sleeved on the main slide bar 5. The two ends of the upper spring 8 are respectively abutted with the upper lock handle 6 and the side wall of the lock slot 4, and the two ends of the lower spring 9 are respectively abutted with the lower lock handle 7 and the side wall of the lock slot 4. Under the action of the upper spring 8, the upper lock handle 6 has a tendency to slide downward along the main slide bar 5; under the action of the lower spring 9, the lower lock handle 7 has a tendency to rise along the main slide bar 5. Under the simultaneous action of the upper spring 8 and the lower spring 9, the bottom of the upper lock handle 6 is abutted with the top of the lower lock handle 7. In order to limit the positions of the upper lock handle 6 and the lower lock handle 7, a limit slide block 10 is arranged at the middle position of the main slide bar 5, and the lower position of the upper lock handle 6 is provided with an upper lock handle reserved position 11 corresponding to the position of the limit slide block 10, and the upper position of the lower lock handle 7 is provided with a lower lock handle reserved position 12.

[0024] In order to facilitate the movement of the upper lock handle 6 and the lower lock handle 7, an upper handle 13 is arranged at the upper lock handle 6, and a lower handle 14 is arranged at the lower lock handle 7. An upper lock block 15 is arranged at the outer side of the upper lock handle 6, and an upper lock anchor 16 is arranged at one side of the furnace opening 2 corresponding to the upper lock block 15. A lower lock block 17 is arranged at the outer side of the lower lock handle 7, and a lower lock anchor 18 is arranged at one side of the furnace opening 2 corresponding to the lower lock block 17. The upper lock anchor 16 and the lower lock anchor 18 are both T-shaped anchors, the upper lock anchor 16 faces upward, and the lower lock anchor 18 faces downward. In order to facilitate the locking of the upper lock block 15 and the upper lock anchor 16, and the locking of the lower lock block 17 and the lower lock anchor 18, when the furnace door 2 is closed, the front of the upper lock block 15 is an inclined slope, and the front of the lower lock block 17 is an inclined slope; correspondingly, the front of the upper lock anchor 16 is an inclined slope, and the front of the lower lock block 18 is an inclined slope.

[0025] In order to enhance the stability of the upper lock handle 6 and the lower lock handle 7 during sliding, a directional groove 19 is arranged at the lock groove 4. An upper directional block 20 is arranged at the upper lock handle 6, the upper directional block 20 is embedded in the directional groove 4, and the upper lock handle 6 can slide along the directional groove 19. A lower directional block 21 is arranged at the lower lock handle 7, the lower directional block 21 is embedded in the directional groove 19, and the lower lock handle 7 can slide along the directional groove 19.

[0026] When using the device, the operator holds the upper handle 13 and the lower handle 14 with both hands respectively, pushes the upper handle 13 upward and the lower handle 14 downward respectively, until the upper lock handle 6 and the lower lock handle 7 are unlocked at the same time. When closing the furnace door 2, the operator operates with the left and right hands respectively.

[0027] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and modifications can be made to these embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A double-locking furnace door assembly for heat treatment, characterized in that: The furnace includes a furnace door panel and a furnace door. The furnace door panel has a furnace opening, and one side of the furnace door is hinged to the edge of the furnace opening. The other side of the furnace door has a lock groove, and a main slide rod is provided inside the lock groove. The two ends of the main slide rod are fixedly connected to the side wall of the lock groove. An upper lock handle and a lower lock handle are fitted on the main slide rod. The upper lock handle has an upper handle, and the lower lock handle has a lower handle. An upper spring and a lower spring are fitted on the main slide rod. The two ends of the upper spring abut against the side wall of the upper lock handle and the lock groove, respectively. The two ends of the lower spring abut against the side wall of the lower lock handle and the lock groove, respectively. The bottom of the upper lock handle abuts against the top of the lower lock handle. An upper lock block is provided on the outside of the upper lock handle, and an upper lock anchor is provided on one side of the furnace opening. A lower lock block is provided on the outside of the lower lock handle, and a lower lock anchor is provided on one side of the furnace opening.

2. The double-locking heat treatment furnace door assembly according to claim 1, characterized in that: The main slide bar has a limiting slider at the middle position, and the upper locking handle has a reserved position at the lower part of the upper locking handle and a reserved position at the upper part of the lower locking handle.

3. The double-locking heat treatment furnace door assembly according to claim 1, characterized in that: The lock slot is provided with a directional groove; the upper lock handle is provided with an upper directional block, which is embedded in the directional groove, and the upper lock handle can slide along the directional groove; the lower lock handle is provided with a lower directional block, which is embedded in the directional groove, and the lower lock handle can slide along the directional groove.

4. The double-locking heat treatment furnace door assembly according to claim 1, characterized in that: Both the upper and lower locking anchors are T-shaped anchors, with the upper locking anchor facing upwards and the lower locking anchor facing downwards.

5. The double-locking heat treatment furnace door assembly according to claim 1, characterized in that: When the furnace door is closed, the front of the upper locking block is an inclined surface, and the front of the lower locking block is an inclined surface; correspondingly, the front of the upper locking anchor is an inclined surface, and the front of the lower locking block is an inclined surface.

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